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Vehicle barriers along the southern Patagonia mountains divide the United States and Mexico, as well as a number of species habitats running between the two countries. Vehicle barriers make up roughly half of the Arizona-Mexico border infrastructure and are generally 'permeable' to wildlife crossing, but still present minor obstacbles to certain species.

President Trump wants to stop illegal immigration with a "big beautiful" wall along the U.S.-Mexico border, but experts agree it would harm the ecology of one of the most biodiverse regions of North America. Read more»

Barrier construction along the border near Naco is affecting wildlife and causing erosion.

As the bidding war for the construction of President Donald Trump’s wall comes to a close, many environmental activists remain concerned over the potential impact it will have on wildlife and ecology on the border. Read more»

The Arizona Game and Fish Department provided this photo of an endangered ocelot spotted Feb. 8, 2011, in the Huachuca Mountains of southeastern Arizona.

Two confirmed sightings of ocelots in Arizona during the past year bode well for the endangered species' future here, a biologist said. Read more»